The effect of the microstructure upon corrosion resistance of an Al-10wt% Si-2wt%Cu alloy
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2016
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BRAZILIAN MRS MEETING, 15th
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In general, the corrosion behavior strongly depends on the structural morphology
and chemical composition. The literature shows relationships between the
corrosion behavior and the structural morphology of the secondary dendrite
spacing [1]. The objective of this study is to investigate the influence of the
microstructure of an Al-10wt%Si-2wt%Cu alloy in its corrosion resistance. In this
work, an Al-10wt%Si-2wt%Cu alloy was solidified under upward unsteady state
heat flow conditions. Heat was directionally extracted only through a watercooled
bottom made of steel (SAE 1020). The aim of the present work is to
investigate the influence of the microstructure of this alloy upon corrosion
resistance. Experimental results include primary dendrite arm spacings (l1) and
capacitances values (ZC P E ). The corrosion behavior was analysed by
electrochemical impedance spectroscopy technique conducted in a 3% NaCl
solution at room temperature. Coarser dendritic structures tend to improve the
corrosion resistance of an Al-10wt%Si-2wt%Cu alloy.
Como referenciar
RIBEIRO, ALEXANDRE N.; KALLAS, CLAUDETE; SANTOS, GIVANILDO A. dos; NAKAMOTO, FRANCISCO Y.; MORO, JOAO R.; COUTO, ANTONIO A.; MELO, HERCILIO G. de. The effect of the microstructure upon corrosion resistance of an Al-10wt% Si-2wt%Cu alloy. In: BRAZILIAN MRS MEETING, 15th, September 25-29, 2016, Campinas, SP. Abstract... São Carlos, SP: Aptor Software, 2016. p. 1062-1062. Disponível em: http://repositorio.ipen.br/handle/123456789/28077. Acesso em: 30 Dec 2025.
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